The Stem,fluid Valve, cataloged under National Stock Number 4820-01-363-7539, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-363-7539 |
| Primary Part Number | S-598 PC-16L1 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Valve Type for Which Designed | GLOBE |
| Stem Actuating End Type | ROUNDED |
| Criticality Code Justification | ZZZY |
| Valve Size for Which Designed | 5.000 INCHES IN |
| Material | STEEL CORROSION RESISTING |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| S-598 PC-16L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| NL-266-1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| S-598 PIECE 16 | 3/9 Design control — primary reference U.S. Government activity |
| NL-266-1 | 5/9 Secondary reference U.S. Government activity |
| S-598 PC-16 | 5/9 Secondary reference Dresser-Rand Company |
NSN 4820-01-363-7539 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-363-7539 has 2 manufacturer part numbers on file: S-598 PC-16L1 (Naval Inventory Control Point Mechanicsburg), NL-266-1L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for S-598 PC-16L1: Valve Type for Which Designed: GLOBE; Stem Actuating End Type: ROUNDED; Criticality Code Justification: ZZZY; Valve Size for Which Designed: 5.000 INCHES IN. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 4820-01-363-7539 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.